101140909 has 2 divisors, whose sum is σ = 101140910. Its totient is φ = 101140908.

The previous prime is 101140861. The next prime is 101140931. The reversal of 101140909 is 909041101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74132100 + 27008809 = 8610^2 + 5197^2 .

It is a cyclic number.

It is not a de Polignac number, because 101140909 - 2¹⁵ = 101108141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101140969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50570454 + 50570455.

It is an arithmetic number, because the mean of its divisors is an integer number (50570455).

Almost surely, 2^101140909 is an apocalyptic number.

It is an amenable number.

101140909 is a deficient number, since it is larger than the sum of its proper divisors (1).

101140909 is an equidigital number, since it uses as much as digits as its factorization.

101140909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 101140909 is about 10056.8836624473. The cubic root of 101140909 is about 465.9174226018.

The spelling of 101140909 in words is "one hundred one million, one hundred forty thousand, nine hundred nine".